As the light rays bounce between the mirrors at each end, they stimulate further light emission from other excited atoms.

His last project was a vertical start airplane—nothing even close to a laser. She plans to continue the workshops this fall along with graduate and undergraduate student volunteers and other physics department staff. Ted, along with many other scientists, joined the race. The optical tweezers focus laser light through a microscope objective lens.

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Quantum mechanics is becoming important, says McGuirk, because “as electronics become smaller and smaller, classical physics will no longer be able to describe their behaviour. More than students attended the dozen two-hour Burnaby campus workshops, using lasers in hands-on experiments to learn about reflection, refraction and the nature of electromagnetic radiation.

Physicist Jeff McGuirk uses lasers in his atomic physics lab to cool and trap the gases of atoms. cqa

But a laser generates “coherent” light, which means its waves move in one direction and at the same wavelength, producing a powerful monochromatic or single-coloured beam. Comments Commenting is closed Comment Guidelines.

Scattering intense laser light off the atoms exerts enough force to cool the gases to a few millionths of a degree above absolute zero. Forde aims to relate the sequence of proteins to their mechanical function, which may provide insight into the mechanisms of connective-tissue diseases.

Geographer Jeremy Venditti is oasors to understand the role that turbulence plays in riverbed deposits and erosion.

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Her research group is using these particles as handles to stretch single molecules. At the focus, microscopic particles can be “trapped” held stable, in solution and the forces acting on them can be probed.

And this year the Radiation Safety Office is planning to offer a new course to train non-university laser users who are interested in becoming laser-safety officers for their organizations. SFU a laser safety pioneer Rapid advances in laser technology are expanding its use in a variety of fields, yet its potential hazards—particularly serious eye damage—are not always recognized.

SFU established a laser safety program 10 years ago to ensure the safe use of lasers on campus.

A flash tube—which Maiman acquired from a photographic supply catalogue—is coiled around the bar. He was always looking to create some kind of spark. The laser pioneer, lasrs died inwas nominated three times for a Nobel Prize.

Ca kids particularly enjoyed “creating optical mazes from mirrors and glass and using Jell-O to model how light travels in a fiber optic cable,” says Moll.